Do magnetic phosphorus adsorbents used for lake restoration impact on zooplankton community?

Álvarez-Manzaneda, I.; Guerrero, Francisco; Arco, Ana Isabel Del; Funes, A.; Cruz-Pizarro, L.; Vicente, Inmaculada de

doi:10.1016/j.scitotenv.2018.11.375

Cited by 6 publications

(1 citation statement)

References 67 publications

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“…Beside the removal of P, MP can release low to undetectable amounts of dissolved iron (MP-Fe dis ) (Funes et al 2016). Previous assessments observing the effect of MP application for 24 hours and MP-Fe dis on lake communities (Funes et al 2016; Álvarez-Manzaneda et al 2019) demonstrated that a single application of MP reduced P in the water column and had no impact on the plankton communities in terms of total abundance, species richness and species diversity (Álvarez-Manzaneda et al 2019; del Arco et al 2021). However, in a laboratory experiment with glass jars (1 L) MP exposure effects (also 24 hours contact time) on Daphnia magna resulted in drastic abundance decrease independently of the degree of intra-specific competition (i.e.…”

Section: Introductionmentioning

confidence: 99%

Population dynamics hide phenotypic changes driven by subtle chemical exposures: implications for risk assessments

Arco

Becks

Vicente

2023

Preprint

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Ecological risk assessment of chemicals focuses on the response of different taxa in isolation not taking ecological and evolutionary interplay in communities into account. Its consideration would, however, allow for an improved assessment by testing for implications within and across trophic levels and changes in the phenotypic and genotypic diversity within populations. We present a simple experimental system that can be used to evaluate the ecological and evolutionary responses to chemical exposure at microbial community levels. We exposed a microbial model system of the ciliate Tetrahymena thermophila (predator) and the bacterium Pseudomonas fluorescens (prey) to iron released from Magnetic Particles (MP-Fedis), which are Phosphorus (P) adsorbents used in lake restoration. Our results show that while the responses of predator single population size differed across concentrations of MP-Fedis and the responses of prey from communities differed also across concentration of MP-Fedis, the community responses (species ratio) were similar for the different MP-Fedis concentrations. Looking further at an evolutionary change in the bacterial prey defence, we found that MP-Fedis drove different patterns and dynamics of defence evolution. Overall, our study shows how similar community dynamics mask changes at evolutionary levels what would be overlooked in the design of current risk assessment protocols where evolutionary approaches are not considered.

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Section: Introductionmentioning

confidence: 99%

Population dynamics hide phenotypic changes driven by subtle chemical exposures: implications for risk assessments

Arco

Becks

Vicente

2023

Preprint

View full text Add to dashboard Cite

show abstract

Population dynamics hide phenotypic changes driven by subtle chemical exposures: implications for risk assessments

2023

View full text Add to dashboard Cite

Ecological risk assessment of chemicals focuses on the response of different taxa in isolation not taking ecological and evolutionary interplay in communities into account. Its consideration would, however, allow for an improved assessment by testing for implications within and across trophic levels and changes in the phenotypic and genotypic diversity within populations. We present a simple experimental system that can be used to evaluate the ecological and evolutionary responses to chemical exposure at microbial community levels. We exposed a microbial model system of the ciliate Tetrahymena thermophila (predator) and the bacterium Pseudomonas fluorescens (prey) to iron released from Magnetic Particles (MP-Fedis), which are Phosphorus (P) adsorbents used in lake restoration. Our results show that while the responses of predator single population size differed across concentrations of MP-Fedis and the responses of prey from communities differed also across concentration of MP-Fedis, the community responses (species ratio) were similar for the different MP-Fedis concentrations. Looking further at an evolutionary change in the bacterial preys’ defence, we found that MP-Fedis drove different patterns and dynamics of defence evolution. Overall, our study shows how similar community dynamics mask changes at evolutionary levels that would be overlooked in the design of current risk assessment protocols where evolutionary approaches are not considered.

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Environmental impacts of selected metal cations for phosphorus capture in natural waters: A synthesis

Riza,

Grieger,

Horgan

et al. 2024

Chemosphere

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Do magnetic phosphorus adsorbents used for lake restoration impact on zooplankton community?

Cited by 6 publications

References 67 publications

Population dynamics hide phenotypic changes driven by subtle chemical exposures: implications for risk assessments

Population dynamics hide phenotypic changes driven by subtle chemical exposures: implications for risk assessments

Population dynamics hide phenotypic changes driven by subtle chemical exposures: implications for risk assessments

Environmental impacts of selected metal cations for phosphorus capture in natural waters: A synthesis

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